Fixed imageIO initialization for image writing
Fixed imageIO initialization for image writing

* the imageIO did not receive the ImageIOBase::IOPixelType information
* correctly

fmilano/mitk,danielknorr/MITK,fmilano/mitk,RabadanLab/MITKats,rfloca/MITK,danielknorr/MITK,MITK/MITK,NifTK/MITK,fmilano/mitk,nocnokneo/MITK,rfloca/MITK,lsanzdiaz/MITK-BiiG,rfloca/MITK,danielknorr/MITK,nocnokneo/MITK,iwegner/MITK,NifTK/MITK,RabadanLab/MITKats,danielknorr/MITK,iwegner/MITK,nocnokneo/MITK,MITK/MITK,NifTK/MITK,RabadanLab/MITKats,fmilano/mitk,RabadanLab/MITKats,MITK/MITK,fmilano/mitk,fmilano/mitk,RabadanLab/MITKats,lsanzdiaz/MITK-BiiG,NifTK/MITK,MITK/MITK,danielknorr/MITK,rfloca/MITK,MITK/MITK,nocnokneo/MITK,rfloca/MITK,lsanzdiaz/MITK-BiiG,iwegner/MITK,RabadanLab/MITKats,rfloca/MITK,iwegner/MITK,iwegner/MITK,fmilano/mitk,nocnokneo/MITK,danielknorr/MITK,MITK/MITK,NifTK/MITK,iwegner/MITK,lsanzdiaz/MITK-BiiG,rfloca/MITK,lsanzdiaz/MITK-BiiG,nocnokneo/MITK,lsanzdiaz/MITK-BiiG,lsanzdiaz/MITK-BiiG,lsanzdiaz/MITK-BiiG,danielknorr/MITK,NifTK/MITK,nocnokneo/MITK